Yintoni umahluko phakathi kwemitha yenqanaba le-ultrasonic kunye nemitha yenqanaba le-radar?

Inqanaba lelinye lawona manqanaba abalulekileyo ekujoliswe kuwo ekujongeni inkqubo yemizi-mveliso. Ekulinganisweni kwamanqanaba okuqhubekayo kweetanki ezahlukeneyo, ii-silos, amachibi okubhukuda, njl.njl., kunzima ukuba nezixhobo ezilinganayo ezinokuhlangabezana nazo zonke iimeko zokusebenza ngenxa yeemeko ezahlukeneyo zentsimi.

Phakathi kwazo, iigeyiji ze-radar kunye ne-ultrasonic level zisetyenziswa kakhulu kwizixhobo zokulinganisa ezingadibaniyo. Ngoko ke, yintoni umahluko phakathi kwemitha yenqanaba le-radar kunye nemitha yenqanaba le-ultrasonic? Yintoni umgaqo wezi ntlobo zimbini zokulinganisa? Ziziphi iingenelo zemitha yenqanaba le-radar kunye nemitha yenqanaba le-ultrasonic?

Okokuqala, imitha yenqanaba le-ultrasonic

Ngokubanzi sibiza isandi ngamaza angaphezulu kwe-20kHz ultrasonic wave, i-ultrasonic wave luhlobo lwamaza oomatshini, oko kukuthi, ukungcangcazela koomatshini kwindawo ethambileyo kwinkqubo yokusasazeka, ibonakaliswa ngamaza aphezulu, ubude obufutshane, into encinci yokusasazeka, kunye ne-directivity elungileyo, inokuba yi-ray kunye nokusasazwa kwe-directional.

Ukuncitshiswa kwe-ultrasonic kwizinto ezimanzi neziqinileyo kuncinci kakhulu, ngoko ke amandla okungena aqinile, ngakumbi kwizinto eziqinileyo ezikhanyayo, i-ultrasonic ingangena kumashumi eemitha ubude, idibana nokungcola okanye i-interfaces iya kuba nomboniso ocacileyo, umlinganiselo wenqanaba le-ultrasonic kukusetyenziswa kolu phawu.

Kwiteknoloji yokufumanisa i-ultrasonic, nokuba loluphi uhlobo lwesixhobo se-ultrasonic, kuyimfuneko ukuguqula amandla ombane abe yi-ultrasonic emission, uze emva koko ubuyisele kwiimpawu zombane, isixhobo sokugqiba lo msebenzi sibizwa ngokuba yi-ultrasonic transducer, esaziwa ngokuba yi-probe.

Xa isebenza, i-transducer ye-ultrasonic ibekwa ngaphezulu kwento elinganisiweyo kwaye ikhuphe amaza e-ultrasonic ezantsi. Amaza e-ultrasonic adlula kwi-air medium, abonakala emva xa edibana nomphezulu wento elinganisiweyo, aze amkelwe yi-transducer aze aguqulwe abe yisignali yombane. Emva kokufumanisa le signali, inxalenye yokufumanisa nge-elektroniki iyiguqula ibe yisignali yenqanaba lokubonisa kunye nokuphuma.

Ezimbini, imitha yenqanaba leradar

Indlela yokusebenza yemitha yenqanaba le-radar iyafana neyemitha yenqanaba le-ultrasonic, kwaye imitha yenqanaba le-radar ikwasebenzisa indlela yokusebenza yokudlulisa - ukubonakalisa - ukufumana. Umahluko kukuba ukulinganiswa kwemitha yenqanaba le-radar ultrasonic kuxhomekeke kakhulu kwi-transducer ye-ultrasonic, ngelixa imitha yenqanaba le-radar ixhomekeke kwintloko ye-high-frequency kunye ne-antenna.

Iimitha zenqanaba le-ultrasonic zisebenzisa amaza oomatshini, ngelixa iimitha zenqanaba le-radar zisebenzisa amaza e-electromagnetic aphezulu kakhulu (aliqela ukusuka kwi-G ukuya kwi-G Hertz amashumi). Amaza e-electromagnetic ahamba ngesantya sokukhanya, kwaye ixesha lokuhamba linokuguqulwa libe yisignali yenqanaba ngamacandelo e-elektroniki.

Esinye imitha yenqanaba leradar eqhelekileyo yimitha yenqanaba leradar yamaza ekhokelwayo.

Imitha yenqanaba leradar yamaza akhokelwayo yimitha yenqanaba leradar esekwe kumgaqo we-time domain reflectometry (TDR). I-electromagnetic pulse yemitha yenqanaba leradar isasazeka ecaleni kwentambo yentsimbi okanye iprobe ngesantya sokukhanya. Xa idibana nomphezulu we-medium elinganisiweyo, inxalenye ye-pulse yemitha yenqanaba leradar iyabonakaliswa ukuze yenze i-echo kwaye ibuyele kwisixhobo sokuqalisa i-pulse ngendlela efanayo. Umgama phakathi kwe-transmitter kunye nomphezulu we-medium olinganisiweyo uhambelana nexesha lokusasazeka kwe-pulse apho ukuphakama kwenqanaba lolwelo kubalwa khona.

Okwesithathu, iingenelo kunye nokungalungi kweradar kunye ne-ultrasonic level meter

1. Ukuchaneka kwe-ultrasound akulunganga njenge-radar;

2. Ngenxa yobudlelwane phakathi kwamaza kunye nobukhulu be-antenna, imitha yenqanaba le-radar enemaza aphezulu incinci kwaye kulula ukuyifaka;

3. Ngenxa yokuba i-radar frequency iphezulu, ubude be-wavelength bufutshane, kwaye kukho ukubonakaliswa okungcono kwiindawo eziqinileyo ezithambekileyo;

4. Indawo engaboniyo yokulinganisa iradar incinci kune-ultrasound;

5. Ngenxa yesantya esiphezulu se-radar, i-Angle ye-radar beam incinci, amandla axineneyo, kwaye amandla e-echo ayanda ngelixa enceda ekuphepheni ukuphazamiseka;

6. Xa kuthelekiswa neemitha ze-ultrasonic level ezisebenzisa amaza oomatshini, i-radar ngokusisiseko ayichaphazeleki yi-vacuum, umphunga wamanzi emoyeni, uthuli (ngaphandle kwe-graphite, i-ferroalloy kunye nolunye uthuli oluphezulu lwe-dielectric), utshintsho lobushushu kunye noxinzelelo;